![Linus Torvalds](/assets/img/avatar_default.png)
Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlSOD20ACgkQMUfUDdst+ylLPACg2QrW1oHhdTMT9WI8jihlHVRM 53kAoLeteByQ3iVwWurwwseRPiWa8+MI =OVRS -----END PGP SIGNATURE----- Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
283 lines
6.3 KiB
C
283 lines
6.3 KiB
C
/*
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* Loopback IEEE 802.15.4 interface
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*
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* Copyright 2007-2012 Siemens AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Written by:
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* Sergey Lapin <slapin@ossfans.org>
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* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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* Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
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*/
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#include <linux/module.h>
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#include <linux/timer.h>
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#include <linux/platform_device.h>
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#include <linux/netdevice.h>
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#include <linux/device.h>
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#include <linux/spinlock.h>
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#include <net/mac802154.h>
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#include <net/cfg802154.h>
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static int numlbs = 1;
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struct fakelb_dev_priv {
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struct ieee802154_hw *hw;
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struct list_head list;
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struct fakelb_priv *fake;
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spinlock_t lock;
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bool working;
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};
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struct fakelb_priv {
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struct list_head list;
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rwlock_t lock;
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};
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static int
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fakelb_hw_ed(struct ieee802154_hw *hw, u8 *level)
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{
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BUG_ON(!level);
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*level = 0xbe;
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return 0;
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}
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static int
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fakelb_hw_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
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{
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pr_debug("set channel to %d\n", channel);
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return 0;
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}
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static void
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fakelb_hw_deliver(struct fakelb_dev_priv *priv, struct sk_buff *skb)
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{
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struct sk_buff *newskb;
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spin_lock(&priv->lock);
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if (priv->working) {
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newskb = pskb_copy(skb, GFP_ATOMIC);
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ieee802154_rx_irqsafe(priv->hw, newskb, 0xcc);
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}
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spin_unlock(&priv->lock);
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}
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static int
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fakelb_hw_xmit(struct ieee802154_hw *hw, struct sk_buff *skb)
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{
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struct fakelb_dev_priv *priv = hw->priv;
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struct fakelb_priv *fake = priv->fake;
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read_lock_bh(&fake->lock);
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if (priv->list.next == priv->list.prev) {
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/* we are the only one device */
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fakelb_hw_deliver(priv, skb);
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} else {
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struct fakelb_dev_priv *dp;
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list_for_each_entry(dp, &priv->fake->list, list) {
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if (dp != priv &&
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(dp->hw->phy->current_channel ==
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priv->hw->phy->current_channel))
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fakelb_hw_deliver(dp, skb);
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}
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}
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read_unlock_bh(&fake->lock);
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return 0;
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}
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static int
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fakelb_hw_start(struct ieee802154_hw *hw) {
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struct fakelb_dev_priv *priv = hw->priv;
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int ret = 0;
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spin_lock(&priv->lock);
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if (priv->working)
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ret = -EBUSY;
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else
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priv->working = 1;
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spin_unlock(&priv->lock);
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return ret;
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}
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static void
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fakelb_hw_stop(struct ieee802154_hw *hw) {
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struct fakelb_dev_priv *priv = hw->priv;
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spin_lock(&priv->lock);
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priv->working = 0;
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spin_unlock(&priv->lock);
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}
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static const struct ieee802154_ops fakelb_ops = {
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.owner = THIS_MODULE,
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.xmit_sync = fakelb_hw_xmit,
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.ed = fakelb_hw_ed,
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.set_channel = fakelb_hw_channel,
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.start = fakelb_hw_start,
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.stop = fakelb_hw_stop,
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};
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/* Number of dummy devices to be set up by this module. */
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module_param(numlbs, int, 0);
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MODULE_PARM_DESC(numlbs, " number of pseudo devices");
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static int fakelb_add_one(struct device *dev, struct fakelb_priv *fake)
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{
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struct fakelb_dev_priv *priv;
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int err;
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struct ieee802154_hw *hw;
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hw = ieee802154_alloc_hw(sizeof(*priv), &fakelb_ops);
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if (!hw)
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return -ENOMEM;
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priv = hw->priv;
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priv->hw = hw;
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/* 868 MHz BPSK 802.15.4-2003 */
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hw->phy->channels_supported[0] |= 1;
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/* 915 MHz BPSK 802.15.4-2003 */
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hw->phy->channels_supported[0] |= 0x7fe;
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/* 2.4 GHz O-QPSK 802.15.4-2003 */
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hw->phy->channels_supported[0] |= 0x7FFF800;
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/* 868 MHz ASK 802.15.4-2006 */
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hw->phy->channels_supported[1] |= 1;
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/* 915 MHz ASK 802.15.4-2006 */
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hw->phy->channels_supported[1] |= 0x7fe;
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/* 868 MHz O-QPSK 802.15.4-2006 */
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hw->phy->channels_supported[2] |= 1;
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/* 915 MHz O-QPSK 802.15.4-2006 */
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hw->phy->channels_supported[2] |= 0x7fe;
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/* 2.4 GHz CSS 802.15.4a-2007 */
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hw->phy->channels_supported[3] |= 0x3fff;
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/* UWB Sub-gigahertz 802.15.4a-2007 */
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hw->phy->channels_supported[4] |= 1;
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/* UWB Low band 802.15.4a-2007 */
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hw->phy->channels_supported[4] |= 0x1e;
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/* UWB High band 802.15.4a-2007 */
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hw->phy->channels_supported[4] |= 0xffe0;
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/* 750 MHz O-QPSK 802.15.4c-2009 */
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hw->phy->channels_supported[5] |= 0xf;
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/* 750 MHz MPSK 802.15.4c-2009 */
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hw->phy->channels_supported[5] |= 0xf0;
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/* 950 MHz BPSK 802.15.4d-2009 */
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hw->phy->channels_supported[6] |= 0x3ff;
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/* 950 MHz GFSK 802.15.4d-2009 */
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hw->phy->channels_supported[6] |= 0x3ffc00;
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INIT_LIST_HEAD(&priv->list);
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priv->fake = fake;
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spin_lock_init(&priv->lock);
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hw->parent = dev;
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err = ieee802154_register_hw(hw);
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if (err)
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goto err_reg;
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write_lock_bh(&fake->lock);
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list_add_tail(&priv->list, &fake->list);
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write_unlock_bh(&fake->lock);
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return 0;
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err_reg:
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ieee802154_free_hw(priv->hw);
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return err;
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}
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static void fakelb_del(struct fakelb_dev_priv *priv)
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{
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write_lock_bh(&priv->fake->lock);
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list_del(&priv->list);
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write_unlock_bh(&priv->fake->lock);
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ieee802154_unregister_hw(priv->hw);
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ieee802154_free_hw(priv->hw);
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}
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static int fakelb_probe(struct platform_device *pdev)
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{
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struct fakelb_priv *priv;
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struct fakelb_dev_priv *dp;
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int err = -ENOMEM;
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int i;
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priv = devm_kzalloc(&pdev->dev, sizeof(struct fakelb_priv),
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GFP_KERNEL);
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if (!priv)
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goto err_alloc;
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INIT_LIST_HEAD(&priv->list);
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rwlock_init(&priv->lock);
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for (i = 0; i < numlbs; i++) {
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err = fakelb_add_one(&pdev->dev, priv);
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if (err < 0)
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goto err_slave;
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}
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platform_set_drvdata(pdev, priv);
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dev_info(&pdev->dev, "added ieee802154 hardware\n");
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return 0;
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err_slave:
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list_for_each_entry(dp, &priv->list, list)
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fakelb_del(dp);
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err_alloc:
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return err;
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}
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static int fakelb_remove(struct platform_device *pdev)
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{
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struct fakelb_priv *priv = platform_get_drvdata(pdev);
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struct fakelb_dev_priv *dp, *temp;
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list_for_each_entry_safe(dp, temp, &priv->list, list)
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fakelb_del(dp);
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return 0;
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}
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static struct platform_device *ieee802154fake_dev;
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static struct platform_driver ieee802154fake_driver = {
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.probe = fakelb_probe,
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.remove = fakelb_remove,
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.driver = {
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.name = "ieee802154fakelb",
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},
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};
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static __init int fakelb_init_module(void)
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{
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ieee802154fake_dev = platform_device_register_simple(
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"ieee802154fakelb", -1, NULL, 0);
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return platform_driver_register(&ieee802154fake_driver);
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}
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static __exit void fake_remove_module(void)
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{
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platform_driver_unregister(&ieee802154fake_driver);
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platform_device_unregister(ieee802154fake_dev);
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}
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module_init(fakelb_init_module);
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module_exit(fake_remove_module);
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MODULE_LICENSE("GPL");
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