/*
   Copyright (c) 2011,2012 Intel Corp.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 and
   only 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.
*/

#ifndef __AMP_H
#define __AMP_H

struct amp_ctrl {
	struct list_head	list;
	struct kref		kref;
	__u8			id;
	__u16			assoc_len_so_far;
	__u16			assoc_rem_len;
	__u16			assoc_len;
	__u8			*assoc;
};

int amp_ctrl_put(struct amp_ctrl *ctrl);
void amp_ctrl_get(struct amp_ctrl *ctrl);
struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr, u8 id);
struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id);
void amp_ctrl_list_flush(struct amp_mgr *mgr);

struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr,
			     u8 remote_id, bool out);

int phylink_gen_key(struct hci_conn *hcon, u8 *data, u8 *len, u8 *type);

void amp_read_loc_info(struct hci_dev *hdev, struct amp_mgr *mgr);
void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle);
void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr);
void amp_read_loc_assoc_final_data(struct hci_dev *hdev,
				   struct hci_conn *hcon);
void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
			struct hci_conn *hcon);
void amp_accept_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
			struct hci_conn *hcon);

#if IS_ENABLED(CONFIG_BT_HS)
void amp_create_logical_link(struct l2cap_chan *chan);
void amp_disconnect_logical_link(struct hci_chan *hchan);
#else
static inline void amp_create_logical_link(struct l2cap_chan *chan)
{
}

static inline void amp_disconnect_logical_link(struct hci_chan *hchan)
{
}
#endif

void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle);
void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle);
void amp_physical_cfm(struct hci_conn *bredr_hcon, struct hci_conn *hs_hcon);
void amp_create_logical_link(struct l2cap_chan *chan);
void amp_disconnect_logical_link(struct hci_chan *hchan);
void amp_destroy_logical_link(struct hci_chan *hchan, u8 reason);

#endif /* __AMP_H */
55cdea28a959a'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=8fe809a992639b2013c0d8da2ba55cdea28a959a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=8fe809a992639b2013c0d8da2ba55cdea28a959a'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/mac802154?id=8fe809a992639b2013c0d8da2ba55cdea28a959a'>mac802154</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/mac802154/ieee802154_i.h?id=8fe809a992639b2013c0d8da2ba55cdea28a959a'>ieee802154_i.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/mac802154/ieee802154_i.h?id=8fe809a992639b2013c0d8da2ba55cdea28a959a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;</td><td class='right'>2017-02-01 17:45:02 +0000</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-02-01 21:17:49 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/fc?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>c8f325a59cfc718d13a50fbc746ed9b415c25e92</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/scsi/fc?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>d53fbdac9d0781e39a13b2ac6b2bd258cf3b4140</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/scsi/fc?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>include/scsi/fc</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/fc?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>bf29bddf0417a4783da3b24e8c9e017ac649326f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/scsi/fc?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92&amp;id2=bf29bddf0417a4783da3b24e8c9e017ac649326f'>diff</a>)</td></tr></table>
<div class='commit-subject'>efi/fdt: Avoid FDT manipulation after ExitBootServices()</div><div class='commit-msg'>Some AArch64 UEFI implementations disable the MMU in ExitBootServices(),
after which unaligned accesses to RAM are no longer supported.

Commit:

  abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")

fixed an issue in the memory map handling of the stub FDT code, but
inadvertently created an issue with such firmware, by moving some
of the FDT manipulation to after the invocation of ExitBootServices().

Given that the stub's libfdt implementation uses the ordinary, accelerated
string functions, which rely on hardware handling of unaligned accesses,
manipulating the FDT with the MMU off may result in alignment faults.

So fix the situation by moving the update_fdt_memmap() call into the
callback function invoked by efi_exit_boot_services() right before it
calls the ExitBootServices() UEFI service (which is arguably a better
place for it anyway)

Note that disabling the MMU in ExitBootServices() is not compliant with
the UEFI spec, and carries great risk due to the fact that switching from
cached to uncached memory accesses halfway through compiler generated code
(i.e., involving a stack) can never be done in a way that is architecturally
safe.

Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")
Signed-off-by: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Tested-by: Riku Voipio &lt;riku.voipio@linaro.org&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Cc: mark.rutland@arm.com
Cc: linux-efi@vger.kernel.org
Cc: matt@codeblueprint.co.uk
Cc: leif.lindholm@linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>Diffstat</a> (limited to 'include/scsi/fc')</div><table summary='diffstat' class='diffstat'>