When an NFC driver or host controller stack discovers a secure element,
it will call nfc_add_se(). In order for userspace applications to use
these secure elements, a netlink event will then be sent with the SE
index and its type. With that information userspace applications can
decide wether or not to enable SEs, through their indexes.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

As several NFC chipsets can have their firmwares upgraded and
reflashed, this patchset adds a new netlink command to trigger
that the driver loads or flashes a new firmware. This will allows
userspace triggered firmware upgrade through netlink.
The firmware name or hint is passed as a parameter, and the driver
will eventually fetch the firmware binary through the request_firmware
API.
The cmd can only be executed when the nfc dev is not in use. Actual
firmware loading/flashing is an asynchronous operation. Result of the
operation shall send a new event up to user space through the nfc dev
multicast socket. During operation, the nfc dev is not openable and
thus not usable.
Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

And stop making it optional. LLCP is a fundamental part of the NFC
specifications and making it optional does not make much sense.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This adds a netlink interface for service name lookup support.
Multiple URIs can be passed nested into the NFC_ATTR_LLC_SDP attribute
using the NFC_CMD_LLC_SDREQ netlink command.
When the SNL reply is received, a NFC_EVENT_LLC_SDRES event is sent to
the user space. URI and SAP tuples are passed back, nested into
NFC_ATTR_LLC_SDP attribute.
Signed-off-by: NThierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

NFC_CMD_LLC_GET_PARAMS: request LTO, RW, and MIUX parameters for a device

NFC_CMD_LLC_SET_PARAMS: set one or more of LTO, RW, and MIUX parameters for
a device. LTO must be set before the link is up otherwise -EINPROGRESS is
returned. RW and MIUX can be set at anytime and will be passed in subsequent
CONNECT and CC messages. If one of the passed parameters is wrong none is
set and -EINVAL is returned.
Signed-off-by: NThierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This routine will be called by drivers whenever they receive data in target
mode. This should be unexpected events and as such should be handled by a
standalone API (i.e. not as a callback pointer from an existing API).
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Userspace gets a netlink event upon target mode activation.
The LLCP layer is also signaled when we get an ATR_REQ in order to get
the remote general bytes.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

nfc_llcp_general_bytes is defined in nfc/core.c as:
nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *gb_len).

as in nfc/nfc.h:
nfc_llcp_general_bytes(struct nfc_dev *dev, u8 *gb_len), if CONFIG_NFC_LLCP
is not defined.

so we got some warnings,
net/nfc/core.c:207:2: warning: passing argument 2 of ‘nfc_llcp_general_bytes’ from incompatible pointer type [enabled by default]
net/nfc/nfc.h:87:19: note: expected ‘u8 *’ but argument is of type ‘size_t *’
Signed-off-by: Njoseph daniel <josephdanielwalter@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use of "unsigned int" is preferred to bare "unsigned" in net tree.
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some chips are capable of detecting when a tag is out of the field, so
they could send a netlink event about it to userspace.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When calling nfc_dep_link_up, we implicitely are in initiator mode.
Which means we also can provide the general bytes as a function argument,
as all drivers will eventually request them.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

llcp_mac routines should be static and inlined or build will fail with NFC
selected without LLCP.

This patch fixes:

LD [M]  net/nfc/nfc.o
net/nfc/netlink.o: In function `nfc_llcp_mac_is_down':
netlink.c:(.text+0x0): multiple definition of `nfc_llcp_mac_is_down'
net/nfc/core.o:(.text+0x0): first defined here
net/nfc/netlink.o: In function `nfc_llcp_mac_is_up':
netlink.c:(.text+0x10): multiple definition of `nfc_llcp_mac_is_up'
net/nfc/core.o:(.text+0x10): first defined here
net/nfc/af_nfc.o: In function `nfc_llcp_mac_is_down':
(.text+0x0): multiple definition of `nfc_llcp_mac_is_down'
net/nfc/core.o:(.text+0x0): first defined here
net/nfc/af_nfc.o: In function `nfc_llcp_mac_is_up':
(.text+0x10): multiple definition of `nfc_llcp_mac_is_up'
net/nfc/core.o:(.text+0x10): first defined here
net/nfc/rawsock.o: In function `nfc_llcp_mac_is_down':
rawsock.c:(.text+0x0): multiple definition of `nfc_llcp_mac_is_down'
net/nfc/core.o:(.text+0x0): first defined here
net/nfc/rawsock.o: In function `nfc_llcp_mac_is_up':
rawsock.c:(.text+0x10): multiple definition of `nfc_llcp_mac_is_up'
net/nfc/core.o:(.text+0x10): first defined here
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch is an initial implementation for the NFC Logical Link Control
protocol. It's also known as NFC peer to peer mode.
This is a basic implementation as it lacks SDP (services Discovery
Protocol), frames aggregation support, and frame rejecion parsing.
Follow up patches will implement those missing features.
This code has been tested against a Nexus S phone implementing LLCP 1.0.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

NFC-DEP (Data Exchange Protocol) is an NFC MAC layer.
This command allows to enable and disable the DEP link on to which e.g.
LLCP can run.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

All uses have been removed, so killing what's not necessary.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Standardize the style for compiler based printf format verification.
Standardized the location of __printf too.

Done via script and a little typing.

$ grep -rPl --include=*.[ch] -w "__attribute__" * | \
  grep -vP "^(tools|scripts|include/linux/compiler-gcc.h)" | \
  xargs perl -n -i -e 'local $/; while (<>) { s/\b__attribute__\s*\(\s*\(\s*format\s*\(\s*printf\s*,\s*(.+)\s*,\s*(.+)\s*\)\s*\)\s*\)/__printf($1, $2)/g ; print; }'

[akpm@linux-foundation.org: revert arch bits]
Signed-off-by: NJoe Perches <joe@perches.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The file nfc.h was moved from include/net to include/net/nfc,
since new NFC header files will be added to include/net/nfc.
Signed-off-by: NIlan Elias <ilane@ti.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add 2 new nfc control operations:
dev_up to turn on the nfc device
dev_down to turn off the nfc device
Signed-off-by: NIlan Elias <ilane@ti.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This socket protocol is used to perform data exchange with NFC
targets.
Signed-off-by: NLauro Ramos Venancio <lauro.venancio@openbossa.org>
Signed-off-by: NAloisio Almeida Jr <aloisio.almeida@openbossa.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NLauro Ramos Venancio <lauro.venancio@openbossa.org>
Signed-off-by: NAloisio Almeida Jr <aloisio.almeida@openbossa.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The NFC generic netlink interface exports the NFC control operations
to the user space.
Signed-off-by: NLauro Ramos Venancio <lauro.venancio@openbossa.org>
Signed-off-by: NAloisio Almeida Jr <aloisio.almeida@openbossa.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Reviewed-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The NFC subsystem core is responsible for providing the device driver
interface. It is also responsible for providing an interface to the control
operations and data exchange.
Signed-off-by: NLauro Ramos Venancio <lauro.venancio@openbossa.org>
Signed-off-by: NAloisio Almeida Jr <aloisio.almeida@openbossa.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>