Hi Samuel,
I have to introduce dynnamic conn_id management has described in the NCI
specification. Only RF static conn_id was supported so far. I have tried to
do a minimun changeset in order to bring all the necessary NCI functions in
order to operate with a secure element with ST21NFCB NFC controller. Besides the
standard NCI commands, the HCI commands are sent following a proprietary
implementation.
Miscellaneous
-------------
I am also routing the HCI event TRANSACTION up to user space. It may help to understand
the necessity to reference every pipe with a tuple {gate, host}. This for example allows
to keep the host information generating this particular event.
Open Questions:
---------------
Both integration may have little gap in their card emulation behavior.
For example:
- ST21NFCA will have card emulation active as soon as we activate a secure element.
- ST21NFCB will have card emulation active according to the selected polling mode.
When do you expect to have card emulation to be active ?
When an application is running, it might be necessary to signals to the under layers
that it has finished to operate with a particular secure element. The goal here is to release
a secure element without deactivating it. For example to allow automatic sleep mode.
With my current implementation,
- With ST21NFCB, enable_se/disable_se may fit this request as both secure element are kept activated.
- With ST21NFCA, enable_se/disable_se does not fit this requirement as i am completely deactivating
the secure element.
I am not sure if the SE activation should not be done in the discovery_se without any deactivation
until the device remove function(?).
Any feedback are welcome.
Best Regards
Christophe
Christophe Ricard (14):
NFC: nci: Add dynamic conn_id NCI concept.
NFC: nci: Make nci_request available for nfc driver
NFC: nci: Add NCI NFCEE constant
NFC: nci: Add nci_nfcee_discover handler command/response/notification
NFC: nci: Add nci_nfcee_mode_set handler command/response
NFC: nci: Add nci_core_conn_create handler command/response
NFC: nci: Add nci_core_conn_close handler command/response
NFC: st21nfcb: Add HCI protocol over NCI protocol support
NFC: st21nfcb: Adding support for secure element
NFC: Forward NFC_EVT_TRANSACTION up to user space
NFC: nci: Add support RF_NFCEE_ACTION_NTF
NFC: nci: Change NCI state machine to LISTEN_ACTIVE and ignore
parameters in rf_intf_activated_ntf
NFC: st21nfcb: Add support for HCI event transaction
NFC: st21nfca: Add support for HCI event transaction
drivers/nfc/st21nfca/st21nfca_se.c | 21 +
drivers/nfc/st21nfcb/Makefile | 2 +-
drivers/nfc/st21nfcb/st21nfcb.c | 8 +-
drivers/nfc/st21nfcb/st21nfcb.h | 2 +
drivers/nfc/st21nfcb/st21nfcb_hci_core.c | 783 +++++++++++++++++++++++++++++++
drivers/nfc/st21nfcb/st21nfcb_hci_core.h | 134 ++++++
drivers/nfc/st21nfcb/st21nfcb_se.c | 631 +++++++++++++++++++++++++
drivers/nfc/st21nfcb/st21nfcb_se.h | 59 +++
include/net/nfc/nci.h | 95 ++++
include/net/nfc/nci_core.h | 40 +-
include/net/nfc/nfc.h | 27 ++
include/uapi/linux/nfc.h | 1 +
net/nfc/core.c | 21 +
net/nfc/nci/core.c | 112 ++++-
net/nfc/nci/data.c | 57 ++-
net/nfc/nci/ntf.c | 82 +++-
net/nfc/nci/rsp.c | 94 +++-
net/nfc/netlink.c | 47 ++
net/nfc/nfc.h | 2 +
19 files changed, 2172 insertions(+), 46 deletions(-)
create mode 100644 drivers/nfc/st21nfcb/st21nfcb_hci_core.c
create mode 100644 drivers/nfc/st21nfcb/st21nfcb_hci_core.h
create mode 100644 drivers/nfc/st21nfcb/st21nfcb_se.c
create mode 100644 drivers/nfc/st21nfcb/st21nfcb_se.h
--
2.1.0
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