Remove unneeded bitwise OR operator on uninitialized sk_buff data
Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
On some peculiar worlds, microreads are found hidden behind MEIs and needs
to be accessed through the ME bus.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Inside Secure microread is an HCI based NFC chipset.
This initial support includes reader and p2p (Target and initiator) modes.
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
These variables are not exported.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use dereferenced pointer in sizeof instead of pointer itself.
Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This is a quite critical patch as it fixes potential reference to
undefined general_bytes which were never set correctly on target
activation due to missing parenthesis.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Each NFC adapter can have several links to different secure elements and
that property needs to be exported by the drivers.
A secure element link can be enabled and disabled, and card emulation will
be handled by the currently active one. Otherwise card emulation will be
host implemented.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
As we may need to support other physical layers, we can avoid linking the
core part into each and every pn544 module.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Some chips diverge from the HCI spec in their implementation of standard
features. This adds a new quirks parameter to
nfc_hci_allocate_device() to let the driver indicate its divergence.
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Some chips use a standard HCI event code, destined to a proprietary
gate, with a different meaning. Therefore, the HCI driver must always
have a chance to intercept the event before standard processing is
attempted.
The new semantic specifies that the result value "1" means that the
driver doesn't especially handle the event. result <= 0 means it was
handled.
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
devm_kzalloc allocates memory that is released when a driver detaches.
This patch uses devm_kzalloc for data that is allocated in the probe
function of a platform device and is only freed in the remove function.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Encapsulate whole frame logic (tx/rx frame structure and size) inside
the ops structure to make the core driver generic for devices which
handle frames in non standard menner (different then pn533 spec say).
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
'params' arg in pn533_cmd_complete_t definition has been deprecated and
currently is not in use (resp skb is pass in arg ptr), so remove it.
Also 'params_len' arg is used as a transfer status indicator, so simply
reword it appropriately.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
As it's not used anymore get rid of that buffer.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
__pn533_send_cmd_frame_async() should be frame type independent. So, don't
use pn533_frame type params and instead use skb for req and resp pointers.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
dev->out_frame buffer is much bigger for ACK frame needs. Use
local buffer instead.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Remove debug messages which do not include valueable informations
in debug mode. Add some new ones for better tracking or reword when
if necessary.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Fix text message to be more suitable for the error code and treat
ESHUTDOWN as an error not debug msg.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Remove obsolete send async api as it's no longer used. Remove
global dev->in_frame as well, as each packet is kept is a
seperate skb struct now, so that's not used anymore.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Remove frame logic from start_pool cb using the new iface
for async send.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Remove frame logic from transceive cb using new iface
for async send.
For pn533_wq_mi_recv() use pn533_send_cmd_direct_async which
sends the cmd directly to the hardware, skipping cmd queue.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Remove frame logic from InJmumpForDEP command using
the new iface for async send.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Remove frame logic from TgSetData and TgGetData commands
using the new iface for async send.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Remove obsolate pn533_send_cmd_frame_sync() and use
previously added new iface for sync send.
The new interface require the use of individual skb for each
cmd which removes some memcpy calls and hides frame logic.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Allocate sk_buff for the request.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
It is intended to replace pn533_send_cmd_frame_sync() iface which
requires from the caller to create complete frame.
The new function constructs a complete frame itself and sends it out
in sync manner. This way frame logic is hidden from the caller.
pn533_send_cmd_sync() returns ERR_PTR in case of an error or a pointer
to valid response sk_buff otherwise. The pointer must be freed by the
caller when it's been consumed.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This iface is intended to be used with DEP transfers. It differs
from pn533_send_cmd_async() in the way the response skb is allocated.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This is intendend to replace pn533_send_cmd_frame_async() which
requires from the caller to create a complete frame.
The new function constructs a frame and sends it out which hides the
frame logic and avoid code duplication.
The caller has to allocate skb and put its payload there, and finally
provide the skb together with a complete cb to pn533_send_cmd_async().
Response skb is allocated by the core part and pass to the caller cb.
Next, the caller has to free it when is not needed anymore or pass it
up to the stack.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
__pn533_send_cmd_frame_async() is called when lock is held so GFP_KERNEL
flag will be always used. Thus, having extra param does not optimise the
code.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
PN533_CMD_DATAEXCH_HEAD_LEN includes a frame header length which is not
seen at a glance. It can be missleading, so split it and define the
frame header length explicitly.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
in_maxlen and out_maxlen was replaced with PN533_NORMAL_FRAME_MAX_LEN
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
In target mode, sent sk_buff were not freed in pn533_tm_send_complete
Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
cmd is allocated in pn533_dep_link_up and passed as an arg to
pn533_send_cmd_frame_async together with a complete cb.
arg is passed to the cb and must be kfreed there.
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
cmd was freed in pn533_dep_link_up regardless of
pn533_send_cmd_frame_async return code. Cmd is passed as argument to
pn533_in_dep_link_up_complete callback and should be freed there.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
In pn533_wq_cmd command was removed from list without cmd_lock held
(race with pn533_send_cmd_frame_async) which could lead to list
corruption. Delete command from list before releasing lock.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The pn544.h just provides the platform data struct and defines and
nothing else. So move it to to linux/platform_data/ now.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
